Question

given the ocular magnification on your microscope, if you use the low power objective what is the total magnification?
40x
100x
400x
1000x

Explanation:

Total microscope magnification is calculated by multiplying the ocular lens magnification (standard is 10x for most microscopes) by the objective lens magnification. Low power objectives are typically 4x. So $10x \times 4x = 40x$.

Answer:

A. 40x